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%I #23 Apr 10 2018 08:26:35
%S 1,4,11,24,42,65,97,135,176,221,277,337,400,469,547,629,716,807,907,
%T 1013,1122,1235,1359,1487,1618,1755,1901,2051,2206,2365,2533,2707,
%U 2884,3065,3257,3453,3652,3857,4071,4289,4512,4739,4975,5217,5462,5711,5971
%N Coordination sequence T2 for Banalsite.
%D Inorganic Crystal Structure Database: Collection Code 4447.
%H Sean A. Irvine, <a href="/A008250/b008250.txt">Table of n, a(n) for n = 0..1000</a>
%H R. W. Grosse-Kunstleve, <a href="/A005897/a005897.html">Coordination Sequences and Encyclopedia of Integer Sequences</a>
%H R. W. Grosse-Kunstleve, G. O. Brunner and N. J. A. Sloane, <a href="http://neilsloane.com/doc/ac96cs/">Algebraic Description of Coordination Sequences and Exact Topological Densities for Zeolites</a>, Acta Cryst., A52 (1996), pp. 879-889.
%H Sean A. Irvine, <a href="/A008000/a008000_1.pdf">Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane</a>
%F a(12*m+k) = 408*m^2 + 68*k*m + one of 12 numbers depending on k, 0<=k<12. - _N. J. A. Sloane_
%F G.f.: (1+3*x+7*x^2+12*x^3+14*x^4+13*x^5+12*x^6+8*x^7+3*x^8-3*x^9-x^10-x^11) / ((1-x)^3*(1+x)*(1+x^2)*(1+x+x^2)). - _Colin Barker_, Dec 20 2015
%K nonn,easy
%O 0,2
%A _Ralf W. Grosse-Kunstleve_
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